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Serna E.M.,Metropolitan Institute of Technology
International Journal of Information Management

Abstract In this article a maturity model for the management of transdisciplinary knowledge is presented, although research nowadays is transdisciplinary the different maturity models proposed in the literature are oriented towards interdisciplinary knowledge management, and, at most, they are oriented toward multidisciplinary knowledge management. The objective is proposing an evolutionary model which accepts knowledge as intensely active and dynamic and evolving in maturity from the early stages of research. But this is possible only if the research team adopt a clear, clean and joint process of disciplinary integration and transdisciplinary integration of the produced and discovered knowledge. In this way, the results of research will have a greater influence on society and they also will be adopted by society. © 2015 Elsevier Ltd. Source

Ponce W.A.,University of Antioquia | Benavides R.H.,University of Antioquia | Benavides R.H.,Metropolitan Institute of Technology
European Physical Journal C

A way of counting free parameters in the quark mass matrices of the standard model, including the constraints coming from weak basis transformations, is presented; this allows one to understand the exact physical meaning of the parallel and non-parallel texture zeros which appear in some “ansätze” of the 3 × 3 quark mass matrices, including the CP violation phenomena in the analysis; it is shown why the six texture zeros are ruled out. Finally, a five texture zeros “ansatz” which properly copes with all experimental constrains, including the angles of the unitary triangle, is presented. 00A9; Springer-Verlag / Società Italiana di Fisica 2011. Source

In 1924, a historically peak time for tuberculosis in Spain, the Ravetllat-Pla Institute was established with the aim of producing and commercializing an anti-tuberculosis serum and researching the variability of the bacteria implicated in this infection. This bacterial form, proposed by Joaquim Ravetllat in the first decade of the 20th century, led to the formulation of a new etiological-pathologic theory of tuberculosis, which upheld the drugs produced by the Institute and was considered heterodox by the official science of the time. The Catalan medical and political network established a space of exclusion leading to the marginalization of the Institute, which, by strengthening its heterodox identity, generated another space of inclusion. In this space, its refuted scientific theory could be socially legitimated and validated through the commercial success of its pharmaceutical products. In this paper, we suggest that the consideration of medicines as commercial products illustrates the active participation of the different users of the Ravetllat-Pla serum in its social construction, re-conceptualization and legitimization. Moreover, from the theoretical framework of inclusion-exclusion dynamics, this research contributes to understanding the processes of knowledge legitimatization by scientific heterodoxy. © 2013, Editorial Universida de Granada. All rights reserved. Source

Pastor-Perez L.,University of Alicante | Buitrago-Sierra R.,Metropolitan Institute of Technology | Sepulveda-Escribano A.,University of Alicante
International Journal of Hydrogen Energy

The low temperature water-gas shift (WGS) reaction has been studied over carbon-supported nickel catalysts promoted by ceria. To this end, cerium oxide has been dispersed (at different loadings: 10, 20, 30 and 40 wt.%) on the activated carbon surface with the aim of obtaining small ceria particles and a highly available surface area. Furthermore, carbon- and ceria-supported nickel catalysts have also been studied as references. A combination of N2 adsorption analysis, powder X-ray diffraction, temperature-programmed reduction with H2, X-ray photoelectron spectroscopy and TEM analysis were used to characterize the Ni-CeO2 interactions and the CeO2 dispersion over the activated carbon support. Catalysts were tested in the low temperature WGS reaction with two different feed gas mixtures: the idealized one (with only CO and H2O) and a slightly harder one (with CO, CO2, H2, and H2O). The obtained results show that there is a clear effect of the ceria loading on the catalytic activity. In both cases, catalysts with 20 and 10 wt.% CeO2 were the most active materials at low temperature. On the other hand, Ni/C shows a lower activity, this assessing the determinant role of ceria in this reaction. Methane, a product of side reactions, was observed in very low amounts, when CO2 and H2 were included in the WGS feed. Nevertheless, our data indicate that the methanation process is mainly due to CO2, and no CO consumption via methanation takes place at the relevant WGS temperatures. Finally, a stability test was carried out, obtaining CO conversions greater than 40% after 150 h of reaction. © 2014 Hydrogen Energy Publications, LLC. Source

Ponce W.A.,University of Antioquia | Gomez J.D.,University of Antioquia | Benavides R.H.,Metropolitan Institute of Technology
Physical Review D - Particles, Fields, Gravitation and Cosmology

The phenomenology of the five independent sets of 3×3 quark mass matrices with five texture zeros is carried through in full detail, including predictions for the CP-violation asymmetries. Our study is done without any approximation, first analytically and then numerically. © 2013 American Physical Society. Source

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